Re: Interesting Analog stuff
sutapanaki said:
jasmin_123 said:
I appreciate Middlebrook's contribution to measuring return ratio.
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The other stuff seems tedious.
And which is the other stuff, that's tedious?
All the other stuff, except that related to measuring return ratio,
seem me
very tedious. I feel no need to use it in analog design.
In most cases, simple intuitive things like superposition,
Miller's theorem, Blackman's formula, etc.,
are more than enough.
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Moreover, their attitude to block diagrams seems me unfounded.
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"Block diagrams are useful tools in linear system theory to help visualize
abstract concepts, but they tend to be very awkward tools in network analysis. For
instance, in an electronic feedback circuit neither the impedance loading nor the
bi-directional transmission of the feedback network are easily captured by the
single-loop feedback block diagram unless the feedback network and the amplifier
circuit are both manipulated and forced to fit the block diagram. The fact is block
diagrams bear little resemblance to circuits and their use in network analysis
mainly results in loss of time and insight." (Vatache Vorperian.)
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Block diagrams have nothing to do with impedance loading.
In an electronic feedback circuit, bi-directional transmission of the feedback network can be easily captured by the single-loop feedback block diagram with no need to manipulate the feedback network and the amplifier and to force them to fit the block diagram.
Block (functional) diagrams bear much resemblance to circuits functioning and their use for network analysis (understanding) helps a lot.